And I'm Robert Siegel. We begin this hour with the annual Group of 8 summit in Northern Ireland. Today, President Obama and the other G8 leaders huddled at a resort there. Among the many topics, the bloody civil war in Syria. President Obama and Russian President Vladimir Putin sat down to talk about Syria, acknowledging that they have, as Mr. Obama said, differing perspectives.

Finally, you know those movies you pull out time and time again when you're not sure what to watch? Well, our colleagues at Weekends on All Things Considered have been asking filmmakers and actors about the movies they never get tired of watching. Today, we hear from actress Paula Patton. She's known for her roles in "Precious" and "Mission: Impossible - Ghost Protocol." And she tells us about one of her favorites.

The man who leaked secret National Security Agency documents, Edward Snowden, defended his decision to reveal details of U.S. surveillance programs in a web chat on Monday. Snowden said he's still in Hong Kong and claims he wouldn't get a fair trial in the U.S. He also said he has not been in contact with the Chinese government and that there are more disclosures to come.

On a Monday, this is MORNING EDITION from NPR News. Good morning. I'm David Greene. We're reporting this morning on a decision just out from the U.S. Supreme Court. The court tossed out an Arizona law that required proof of citizenship for its voters. In a 7-2 decision the justices said the state's voter-approved Proposition 200 interfered with federal law.

The Supreme Court ruled in June that police can routinely take DNA samples from people who are arrested for comparison against a national database. The decision raises major questions about how law enforcement and criminal justice processes will change.

In her book Cows Save The Planet, journalist Judith Schwartz argues that the key to addressing carbon issues and climate change lies beneath our feet. Schwartz says that proper management of soil could solve a long list of environmental problems.

"The thing to realize is that while we think about this as a sky thing — that it's all about all the fossil fuels that we're burning and all that spewing into the atmosphere — it's actually also a ground thing," she tells NPR's Neal Conan.

This is TALK OF THE NATION. I'm Neal Conan in Washington. For the past several weeks, we've taken the opportunity to reconnect with some of our favorite guests and colleagues in a series of conversations looking ahead. Today, longtime NPR New York correspondent Margot Adler, who's filed stories on hundreds of New Yorkers over the years: AIDS activists, street musicians, cops, environmental visionaries, and a guy who will move your car at exactly the right moment to take full advantage of opposite-side-of-the-street parking laws.

In Tehran today, the first news conference of Iran's president-elect ended abruptly when a man in the audience jumped up to protest the absence of the man many believe was elected president four years ago, Mir-Hossein Mousavi has been held under house arrest since 2011. And after the interruption, President-elect Hasan Rouhani left the stage and state television pulled the plug on the live broadcast.